[ Tenses ]
By 2030, scientists ___ a cure for cancer.
A. will discover
B. will have discovered
C. discover
D. will be discovering

Random Topics:
Noun ClauseTypes of Simple SentencesGerunds as objects of prepositionGrammar CorrectionPerfect TenseAdjective / Noun + to InfinitiveV-ing/to-VVerb Patterns / IngPresent ProgressiveModals for Necessity and SuggestionsOther quiz:
Tenses › View…you paid the taxes ?
A. Do
B. Are
C. Has
D. Have
Verb Tenses › View
The kids (play) in the garden all afternoon.
A. played
B. playful
C. plays
D. playing
